CN202811078U - Ultra-supercritical air energy storage/release system - Google Patents
Ultra-supercritical air energy storage/release system Download PDFInfo
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- CN202811078U CN202811078U CN2012203708776U CN201220370877U CN202811078U CN 202811078 U CN202811078 U CN 202811078U CN 2012203708776 U CN2012203708776 U CN 2012203708776U CN 201220370877 U CN201220370877 U CN 201220370877U CN 202811078 U CN202811078 U CN 202811078U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The utility model discloses an ultra-supercritical air energy storage/ release system, provides a novel large-scale energy storage system, and relates to an energy storage technology. The air is compressed into the ultra-supercritical state (the compression heat is stored at the same time) by the off-peak (low-price) electricity of a power station, the air is cooled and the expansion work is recovered due to an expansion machine, so that the efficiency can be improved, and the ultra-supercritical air is cooled, liquefied and stored (the energy is stored) by the stored cold energy; and at the electricity utilization peak, the liquid air is pressured and cooled into the ultra-supercritical state (the cold energy is recovered at the same time), and an electric generator is driven to generate power (the energy is released) by a worm wheel after the compression heat is further absorbed. The system provided by the utility model has the advantages of being high in energy density, high in efficiency, not limited by an energy storage period and a geographical condition, suitable for various power stations (comprising a renewable energy sources power station like the wind energy), environment-friendly, capable of recovering medium and low temperature (calorific value) waste heat and the like.
Description
Technical field
The utility model relates to the energy storage technical field, and particularly a kind of extensive air energy storage based on the ultra supercritical process/releasing can system.
Background technique
The electric power energy storage technology is the important means of adjusting at present the electrical network peak valley, improving power system economy and stability, being one of extensive most important bottleneck that utilizes of unstable, the step renewable energy sources of restriction, also is the key technology of distributed energy and intelligent grid.At present existing electric power energy storage technology comprises pumped storage power station, pressurized air, storage battery, superconduction magnetic energy, flywheel and electric capacity etc.But owing to reasons such as capacity, energy storage cycle, energy density, efficiency for charge-discharge, life-span, operating cost, environmental protection, only draw water two kinds of power station and the pressurized air that in the large scale business system, have moved at present.
Conventional compression air energy-storage system is based on a kind of energy-storage system of gas turbine technology exploitation.At low power consumption, air pressure contractd to be stored in the gas storage chamber, and making electric energy conversion is that the interior of air can store; In peak of power consumption, high-pressure air discharges from gas storage chamber, enters gas-turbine combustion chamber and burns together with fuel, then drives turbine power generation.Compressed-air energy-storage system has that stored energy capacitance is large, the energy storage cycle is long, efficient is high (50%～70%) and the advantage such as specific investment cost less, but, conventional compression air energy-storage system is not an independently technology, it must support the use with turbine power plant, can not be fit to other types, such as power stations such as coal fired power plant, nuclear power station, wind energy and solar energy, be not suitable for especially China take coal fired power generation as main, do not advocate the energy strategy of gas fuel generating.And, compressed-air energy-storage system still relies on combustion of fossil fuels thermal source is provided, face on the one hand that fossil fuel is petered out and the threat of rise in price, its burning still produces the pollutants such as nitride, sulphide and carbon dioxide on the other hand, does not meet green (zero-emission), reproducible energy development requirement.More fatal is, because energy storage density is low, compressed-air energy-storage system also needs specific geographical conditions to build large-scale gas storage chamber, such as rock cavity, Yan Dong, abandoned mine etc., thereby has greatly limited the application area of compressed-air energy-storage system.
The subject matter that faces for solving conventional compression air energy-storage system, particularly to the Dependence Problem of gas turbine, recent years Chinese scholars carried out respectively ground compressed-air energy-storage system (SVCAES), with the compressed-air energy-storage system (AACAES) of backheat, air vapor combined cycle compressed-air energy-storage system (CASH) etc., make compressed-air energy-storage system substantially can break away from the combustion of fossil fuel thermal source.But owing to do not adopt the fossil fuel thermal source, the energy density of compressed-air energy-storage system is lower, has more highlighted large-scale gas storage chamber is relied on, and efficient is also not high enough simultaneously, must find rational solution, just can make the air energy-storage system obtain more extensive and effectively utilize.
In recent years, Chinese scholars has developed supercritical air energy storage system, and it utilizes the character under the super critical condition of air, solves the major technique bottleneck that the energy storage of conventional compression air exists.
The utility model proposes a kind of ultra supercritical air energy-storage system, further promote the performance of supercritical air energy storage system.
Summary of the invention
The purpose of this utility model be a kind of ultra supercritical air energy storage/release is disclosed can system, it is the novel air energy-storage system, utilize character and the system flow innovation of air under the ultra supercritical state, promote the supercritical air energy storage system performance, be suitable for supporting the use of all kinds power station and electrical network energy storage.
For achieving the above object, technical solution of the present utility model is:
A kind of ultra supercritical air energy storage/release can system, comprise compressor bank, accumulation of heat/heat exchanger, cold-storage/heat exchanger, low-temperature storage tank, valve, cryopump, turbines, generator, driver element, it is characterized in that: described system also comprises the expansion unit, described compressor bank with air compressing to the ultra supercritical state, combination by described expansion unit or expansion unit and throttle valve is depressurized to liquid state with the ultra supercritical air cooling-down, and liquid air is stored in the described low-temperature storage tank.
The remarkable difference of it and overcritical compressed-air energy-storage system is that parameter is higher, and pressure reaches 50～420bar, and the simultaneously combination with decompressor or decompressor and throttle valve replaces throttle valve, and the energy density of system and efficient are increased dramatically.
Compressor bank of the present utility model comprises at least one low pressure compressor, at least one high pressure compressor, mutually connect or be integrated into whole multistage compressor, each low pressure compressor entrance connects air-source, at least one decompressor of compression system series connection is to reduce gas temperature, improve system effectiveness, the outlet of decompressor access throttle valve is lowered the temperature a little and can be realized liquefaction, and decompressor can be piston type, centrifugal, axial flow and combined type, the type of decompressor and number of units viewing system parameter and decide; Decompressor and compressor can be designed to coaxial combination, and also can connect by gearbox provides compression power, thereby improves system effectiveness and Economy.System layout is as follows:
Low pressure compressor links to each other with accumulation of heat/heat exchanger respectively through pipeline through pipeline, high pressure compressor; High-pressure air after the store compressed heat enters to enter after cold-storage heat-exchanger is lowered the temperature through pipeline and enters low-temperature storage tank through pipeline after the further decrease temperature and pressure of decompressor liquefies, and is provided with valve, at least one cryopump in pipeline, and valve is positioned at the cryopump upstream; Cold-storage/heat exchanger bottom is provided with deslagging pipeline and exhaust line; Accumulation of heat/heat exchanger interlinks with high-pressure turbine, low-pressure turbine respectively through pipeline.
Its workflow is: during energy storage, utilize drive unit drives combined type compression unit, to the ultra supercritical state, every grade the heat of compression is recovered and is stored in accumulation of heat/heat exchanger with a certain amount of air compressing; Then the ultra supercritical air of certain parameter enters in cold-storage/heat exchanger and cools off, and changes liquid air into through expansion unit expansion decrease temperature and pressure again and enters the low-temperature storage tank storage, does not discharge after the air that part liquefies enters cold-storage heat-exchanger by pipeline; When releasing energy, cryopump liquid towards air pressurized is to ultra supercritical pressure, the high-pressure liquid air is warming up to the ultra supercritical state and reclaims cold energy in cold-storage/heat exchanger, absorbing the heat of compression in accumulation of heat/heat exchanger further heats up the ultra supercritical air, then enter the turbines expansion acting that high pressure turbine and low-pressure turbine form, drive the generator generating.
Described ultra supercritical air energy-storage system, its described driver element is take electrical network or conventional power plant trough-electricity, nuclear power, wind-powered electricity generation, solar electrical energy generation, biomass power generation, water power or tidal power generation one or more motors that drive as power supply wherein.
Described ultra supercritical air energy-storage system, its thermal energy storage process is rationed the power supply or the quality of power supply is enabled when not meeting internet access request in electric power low ebb, renewable energy sources; Exoergic process is enabled when peak of power consumption, electric power accident, renewable energy power generation fluctuation.
Preferably, described system comprises the energy storage subtense angle and releases the energy subtense angle: in the described energy storage subtense angle, described driver element, compressor bank, accumulation of heat/heat exchanger, cold-storage/heat exchanger, expansion unit, low-temperature storage tank are through a pipeline group successively order UNICOM; Described releasing in the energy subtense angle, described low-temperature storage tank, valve, cryopump, cold-storage/heat exchanger, accumulation of heat/heat exchanger, turbines, generator are through another pipeline group successively order UNICOM.
Preferably, described compressor bank comprises at least one low pressure compressor, at least one high pressure compressor, mutually connect or be integrated into whole multistage compression unit, wherein the suction port of first order compressor connects air-source, and in each stage compressor, the air outlet of upper level compressor links to each other with the suction port of next stage compressor after pipeline passes described accumulation of heat/heat exchanger, the air outlet of afterbody high pressure compressor after pipeline passes described accumulation of heat/heat exchanger and cold-storage/heat exchanger with the suction port UNICOM of described expansion unit.
Preferably, described turbines comprises at least one low-pressure turbine, at least one high pressure turbine, mutually connect or be integrated into whole multistage turbine unit, liquid air in the described low-temperature storage tank passes in the first order through pipeline changes the air of ultra supercritical state successively into by valve, cryopump, cold-storage/heat exchanger, accumulation of heat/heat exchanger after, in each stage turbine, the air outlet of upper level turbo machine is connected with the suction port of next stage turbo machine after pipeline passes described accumulation of heat/heat exchanger successively, and the air outlet of afterbody low-pressure turbine leads to atmosphere.
Preferably, the transmission shaft of described driver element and compressor bank is affixed; Described expansion unit can directly drive described compressor bank or pass through another generator connecting in parallel with system by gearbox; The transmission shaft of described generator and turbines is affixed.
Preferably, described accumulation of heat/heat exchanger is heat-insulating container, and heat storage medium is stored in the container, the ultra supercritical air therein with heat storage medium direct contact heat transfer or non-direct contact heat transfer, heat storage type is a kind of in sensible heat, the latent-heat storage or combination; Described accumulation of heat/heat exchanger also is provided with the pipeline that links with extraneous thermal source; Described cold-storage/heat exchanger is heat-insulating container, cool storage medium is stored in the container, ultra supercritical air or liquid air therein with cool storage medium direct contact heat transfer or non-direct contact heat transfer, its cold-storage form is a kind of in sensible heat cold-storage or the solid-liquid phase change cold-storage or combination; Cold-storage/heat exchanger bottom is provided with the deslagging pipeline.
Described ultra supercritical air energy-storage system, its compression process comprises at least one decompressor, is used for making the pressurized air decrease temperature and pressure to be convenient to liquefaction and recovery expansion work, improves system effectiveness.
Described ultra supercritical air energy-storage system, its described accumulation of heat/heat exchanger also is provided with pipeline, and this pipeline and extraneous thermal source interlink, and extraneous thermal source can be solar thermal collector, industrial exhaust heat and all kinds of used heat.Described waste heat, used heat are waste heat, the used heat of power plant, cement industry, iron and steel metallurgical industry, chemical industry; Waste heat, used heat can be stored in accumulation of heat/heat exchanger, also can be stored in special-purpose accumulation of heat/heat exchanger.
Described ultra supercritical air energy-storage system also comprises air purification and purifying in its air compressing, the cooling procedure, remove airborne solid matter and foreign gas; Air purification and purifier apparatus are integrated in compressor bank and the cold-storage/heat exchanger, not separately expression.
Described ultra supercritical air energy-storage system, its described compressor bank; When being multiple compressors, multiple compressors is coaxial series connection form or split axle parallel form; In the parallel form, each split axle and main driving axle are dynamically connected; The exhaust of each stage compressor all cools through accumulation of heat/heat exchanger.
Described ultra supercritical air energy-storage system, its described turbines, overall expansion ratio are between 50～420, and the final stage gas turbine exhaust is near normal pressure; When being many turbo machines, many turbo machines are coaxial series connection form or split axle parallel form; In the parallel form, each split axle and main driving axle are dynamically connected; Accumulation of heat/heat exchanger heat temperature raising is all passed through first in the air inlet of each stage turbine.
Described ultra supercritical air energy-storage system, its described compressor can be piston type, centrifugal, axial flow, screw type or combined type; Its described decompressor and turbo machine can be piston type, axial flow, radial inflow, screw type or hybrid.
Described ultra supercritical air energy-storage system, it is described when multiple compressors, many decompressors/turbo machine, and multiple compressors, many decompressor/turbo machines are distributed on a live axle or the many live axles, connect by gearbox.
Described ultra supercritical air energy-storage system, the flow of its control air is by compression air stream quantitative limitation not.
Described ultra supercritical air energy-storage system, the accumulation of heat form of its described accumulation of heat/heat exchanger is one or more that sensible heat, latent heat or chemical reaction are pined for; The heat storage medium that adopts is water, paraffin, bio-oil, mineral-type crystalline hydrate salt, fuse salt, metal and alloy, organic fatty acid, stone, rock or concrete, and heat storage medium is stored in the thermally insulated container;
Wherein, accumulation of heat/heat exchanger during energy storage, reclaims and stores the heat of compression of compressor generation, and when releasing energy, the pressurized air before the decompressors at different levels is advanced in heating; Release can the time also can be input into waste heat through pipeline, used heat is accumulation of heat/heat exchanger additional heat.
Described ultra supercritical air energy-storage system, its described cold-storage/heat exchanger, it is Kelvin temperature unit that the ultra supercritical air is cooled to 81K-150K(K), be a kind of or combination in sensible heat cold-storage or the solid-liquid phase change cold-storage; The sensible heat cool storage medium that adopts is one or more in sealing ice hockey, sandstone, concrete, aluminium strip dish or other metallics; The solid-liquid phase change cool storage medium is ammonia and the aqueous solution, salts solution, alkanes, olefines material and the compound thereof of solid-liquid phase change temperature between 81K～273K, one or more in alcohols and the aqueous solution thereof, and cool storage medium is stored in the thermally insulated container; Ultra supercritical air or liquid air in cold-storage/heat exchanger with cool storage medium direct contact heat transfer or non-direct contact heat transfer; During energy storage, cold-storage/heat exchanger further cools off the ultra supercritical air is convenient to liquefaction, and when releasing energy, cold-storage/heat exchanger reclaims and store the cold in the high-pressure liquid atmosphere temperature rising process.
Described ultra supercritical air energy-storage system, its described cold-storage/heat exchanger when the low temperature cold quantity not sufficient, adds throttling arrangement so that be that liquefiable enters storage tank after the decrease temperature and pressure a little near the air of liquefaction point.Throttling arrangement also might be cancelled.
Described ultra supercritical air energy-storage system, its described low-temperature storage tank is Dewar storage tank or low temperature storing tank, liquid air stores under normal pressure or band certain pressure situation.
Described ultra supercritical air energy-storage system, its described cryopump, centrifugal or hybrid for reciprocating type, liquid air is pressurized to 5.0MPa～42MPa; In the time of many, be plural serial stage or parallel connection.
Described ultra supercritical air energy-storage system during its energy storage, is regulated energy storage capacity by control first order compressor air inflow.Described ultra supercritical air energy-storage system, its described control first order compressor air inflow is by regulating compressor load, valve opening, driving rotating speed, start-stop Partial shrinkage machine or regulating the control that pressure ratio realizes air inflow.When it releases energy, regulate generating capacity by control liquid air amount of vaporization.
The utility model has the advantage of: energy storage efficiency improves more than 30% than 4～7 percentage points of supercritical air system's raisings, energy storage density than supercritical air system.Simultaneously the energy storage cycle unrestricted, be applicable to all kinds power station, environmentally friendly, recyclable used heat, do not need large storage device, improved soil and resource utilization, have wide prospect of the application.
Description of drawings
Fig. 1 is that ultra supercritical air of the present utility model energy storage/release can system embodiment 1 structural representation;
Fig. 2 is that ultra supercritical air of the present utility model energy storage/releasing can system embodiment 2 structural representation.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
Ultra supercritical air of the present utility model energy storage/release can system, adopt power station low ebb (at a low price) electric energy with air compressing to ultra supercritical state (simultaneously store compressed heat), then utilize decompressor to make the air cooling-down step-down reclaim simultaneously expansion work and raise the efficiency, and utilize the cold energy of having stored with pressure-air cooling, liquefaction and storage (energy storage); In peak of power consumption, the liquid air pressurization is absorbed heat to ultra supercritical state (cold energy in the liquid air is recovered storage simultaneously), and driving generator generating (releasing energy) by turbines after the heat of compression of further absorption storage, some industrial waste heats can be recovered to improve system effectiveness in this process.The ultra supercritical air energy-storage system that the utility model proposes has the high outstanding advantages of energy storage efficiency, owing to adopt Optimizing Flow and high parameter more, the comparable supercritical air energy storage system of system effectiveness is higher, preresearch estimates can reach more than 70%, the advantages such as that energy storage density improves is about 30%～50%, the energy storage cycle is unrestricted, storage device significantly reduces, applicable all kinds power station, environmentally friendly, recyclable various industrial waste heats.
Embodiment:
Fig. 1 is that ultra supercritical air of the present utility model energy storage/releasing can system embodiment 1.Comprise low pressure compressor 1,3, accumulation of heat/heat exchanger 2, high pressure compressor 35,38, decompressor 40(is one-level at least), cold-storage/heat exchanger 4, low-temperature storage tank 6, valve 7, cryopump 8, high-pressure turbine 9,10, low- pressure turbine 43,46, generator 11, driver element 12, pipeline 13,14,15,16,17,18,19,20,21,22,23,24,30,31,34,36,37,39,41,42,44,45 etc., and air A.
Accumulation of heat/heat exchanger 2 interlinks through pipeline 23 and extraneous thermal source.Cold-storage/heat exchanger 4 bottoms are provided with deslagging pipeline 24.
During energy storage, low ebb (at a low price) electric energy drives driver element 12 and drives compressor bank, air A after the purification enters compressor bank and compresses step by step, by accumulation of heat/heat exchanger 2 and heat storage medium heat exchange store compressed heat, cooling in the middle of realizing, be compressed into the ultra supercritical state until enter high pressure compressor 38, through pipeline 39 the ultra supercritical air is transported to accumulation of heat/heat exchanger 2 store compressed heat again, the ultra supercritical air that is cooled to uniform temperature enters cold-storage/heat exchanger 4 and further is cooled to lower temperature by cool storage medium, enter at least one-level of cryogenic expansion machine 40() acting of expanding, liquefy after the decrease temperature and pressure, liquid air is stored in the low-temperature storage tank 6 through pipeline 30.When releasing energy, open valve 7, cryopump 8 will be pressurized to ultra supercritical pressure from the liquid air of low-temperature storage tank 6 after, be delivered to cold-storage/heat exchanger 4 and cool storage medium heat exchange and gasification by pipeline 18, reclaim simultaneously cold, the ultra supercritical air that goes out cold-storage/heat exchanger 4 enters accumulation of heat/heat exchanger 2 via pipeline 19 again and further heats up, ultra supercritical air after temperature raises injects high-pressure turbine unit expansion acting by pipeline, the turbine outlet air continues to enter the 2 heat absorption intensifications of accumulation of heat/heat exchanger and enters the acting of next stage turbine expansion, until complete through the acting of final stage turbine, weary gas is discharged to atmosphere.Turbines drives generator 11 generatings.
Operation when generally speaking, energy storage is different from exoergic process.During energy storage, compressor bank and decompressor work, turbine generation unit, cryopump 8 are closed down, and valve 7 is closed, and accumulation of heat/heat exchanger 2 reclaims, stores the heat of compression, while cooling work gas, cold-storage/heat exchanger 4 released cold quantities are cooled to low temperature with the ultra supercritical air.Then opposite when releasing energy, compressor bank and decompressor are closed down, turbines, cryopump 8 work, valve 7 is opened, cold-storage/heat exchanger 4 reclaims, stores cold, the high-pressure liquid atmosphere temperature rising is to the ultra supercritical state simultaneously, and 2 on accumulation of heat/heat exchanger discharges the heat of compression, further promotes the ultra supercritical air temperature.In addition, the external heats such as solar energy, waste heat, used heat then can enter accumulation of heat/heat exchanger 2 via pipeline 23 at any time and store, and also can be stored in one independently (not shown in FIG.) in accumulation of heat/heat exchanger; The ultra supercritical air enters 4 coolings of cold-storage/heat exchanger, and isolated impurity and pollutant can be discharged by pipeline 24 in this process.
Fig. 2 is that ultra supercritical air of the present utility model energy storage/releasing can system embodiment 2.Its structure is basic identical with embodiment 1, but increases throttle valve 48 behind cryogenic expansion machine.Through cold-storage heat-exchanger 4 cooled ultra supercritical air, after decompressor 40 actings and decrease temperature and pressure, enter through throttle valve 48 and further liquefy.Other workflows are similar with embodiment 1.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of the present utility model.
Claims (10)
1. ultra supercritical air energy storage/release can system, comprise compressor bank (1,3,35,38), accumulation of heat/heat exchanger (2), cold-storage/heat exchanger (4), low-temperature storage tank (6), valve (7), cryopump (8), turbines (9,10,43,46), generator (11), driver element (12), it is characterized in that:
Described system also comprises expansion unit (40), described compressor bank (1,3,35,38) with air compressing to the ultra supercritical state, combination by described expansion unit (40) or expansion unit (40) and throttle valve (48) is depressurized to liquid state with the ultra supercritical air cooling-down, and liquid air is stored in the described low-temperature storage tank (6).
2. ultra supercritical air according to claim 1 energy storage/release can system, it is characterized in that: described system comprises the energy storage subtense angle and releases the energy subtense angle: in the described energy storage subtense angle, described driver element (12), compressor bank (1,3,35,38), accumulation of heat/heat exchanger (2), cold-storage/heat exchanger (4), expansion unit (40), low-temperature storage tank (6) are through a pipeline group (13,14,15,34,36,37,39,16,30) successively order UNICOM; Described releasing in the energy subtense angle, described low-temperature storage tank (6), valve (7), cryopump (8), cold-storage/heat exchanger (4), accumulation of heat/heat exchanger (2), turbines (9,10,43,46), generator (11) are through another pipeline group (31,18,19,20,21,22,41,42,44,45) successively order UNICOM.
3. ultra supercritical air according to claim 1 and 2 energy storage/release can system, it is characterized in that: described compressor bank (1,3,35,38) comprise at least one low pressure compressor (1), at least one high pressure compressor (35), mutually connect or be integrated into whole multistage compression unit, wherein the suction port of first order compressor connects air-source, and in each stage compressor, the air outlet of upper level compressor links to each other with the suction port of next stage compressor after pipeline passes described accumulation of heat/heat exchanger (2), and the air outlet of afterbody high pressure compressor (38) is through pipeline (39,16) pass behind described accumulation of heat/heat exchanger (2) and the cold-storage/heat exchanger (4) and the suction port UNICOM of described expansion unit (40).
4. ultra supercritical air according to claim 1 and 2 energy storage/release can system, it is characterized in that: described turbines (9,10,43,46) comprise at least one low-pressure turbine (46), at least one high pressure turbine (10), mutually connect or be integrated into whole multistage turbine unit, liquid air in the described low-temperature storage tank (6) passes through valve (7) successively through pipeline, cryopump (8), cold-storage/heat exchanger (4), accumulation of heat/heat exchanger (2) passes in the first order after changing the air of ultra supercritical state into, in each stage turbine, the air outlet of upper level turbo machine is connected with the suction port of next stage turbo machine after pipeline passes described accumulation of heat/heat exchanger (2) successively, and the air outlet of afterbody low-pressure turbine (46) leads to atmosphere.
5. ultra supercritical air according to claim 1 energy storage/release the energy system, it is characterized in that: described driver element (12) is affixed with the transmission shaft of compressor bank (1,3,35,38); Described expansion unit (40) can directly drive described compressor bank (1,3,35,38) or pass through another generator connecting in parallel with system by gearbox; Described generator (11) is affixed with the transmission shaft of turbines (9,10,43,46).
6. ultra supercritical air according to claim 1 energy storage/release the energy system, it is characterized in that: described low-temperature storage tank (6) is Dewar storage tank or low temperature storing tank, liquid air stores under normal pressure or band certain pressure situation.
7. ultra supercritical air according to claim 1 energy storage/release can system, it is characterized in that: described accumulation of heat/heat exchanger (2) is heat-insulating container, heat storage medium is stored in the container, the ultra supercritical air therein with heat storage medium direct contact heat transfer or non-direct contact heat transfer, heat storage type is a kind of in sensible heat, the latent-heat storage or combination; Described accumulation of heat/heat exchanger (2) also is provided with the pipeline (23) that links with extraneous thermal source; Described cold-storage/heat exchanger (4) is heat-insulating container, cool storage medium is stored in the container, ultra supercritical air or liquid air therein with cool storage medium direct contact heat transfer or non-direct contact heat transfer, its cold-storage form is a kind of in sensible heat cold-storage or the solid-liquid phase change cold-storage or combination; Cold-storage/heat exchanger (4) bottom is provided with deslagging pipeline (24).
8. ultra supercritical air according to claim 1 energy storage/release the energy system, it is characterized in that: described cryopump (8) is pressurized to 5.0MPa～42MPa for reciprocating type, centrifugal or hybrid with liquid air; In the time of many, be plural serial stage or parallel connection.
9. ultra supercritical air according to claim 1 energy storage/release can system, it is characterized in that: described driver element (12) is the motor that drives with electrical network or conventional power plant trough-electricity, nuclear power, wind-powered electricity generation, solar electrical energy generation, biomass power generation, water power or tidal power generation one or more power supplys wherein.
10. ultra supercritical air according to claim 1 energy storage/release can system, it is characterized in that: described accumulation of heat/heat exchanger (2), the heat storage medium of employing are water, paraffin, bio-oil, mineral-type crystalline hydrate salt, fuse salt, metal or its alloy, organic fatty acid, stone, rock or concrete; Described cold-storage/heat exchanger (4) adopts sensible heat cool storage medium or solid-liquid phase change cool storage medium, and described sensible heat cool storage medium is sealing ice hockey, sandstone, concrete or aluminium strip dish.
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| CN105043147A (en) * | 2015-06-25 | 2015-11-11 | 中国科学院理化技术研究所 | Liquefied compressed air energy storage system with cold-storage liquid media |
| CN105697066A (en) * | 2016-02-03 | 2016-06-22 | 中国科学院理化技术研究所 | Low-temperature liquid air energy storage system |
| GB2534914A (en) * | 2015-02-05 | 2016-08-10 | Isentropic Ltd | Adiabatic liquid air energy storage system |
| GB2537126A (en) * | 2015-04-07 | 2016-10-12 | Isentropic Ltd | Hybrid energy storage system |
| GB2537125A (en) * | 2015-04-07 | 2016-10-12 | Isentropic Ltd | Liquid air energy storage system |
| CN105074141B (en) * | 2013-03-21 | 2017-03-15 | 林德股份公司 | The method and apparatus for producing electric energy |
| CN108979762A (en) * | 2017-06-01 | 2018-12-11 | 中国科学院工程热物理研究所 | It is classified cold storage overcritical compressed-air energy-storage system and method |
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2012
- 2012-07-29 CN CN2012203708776U patent/CN202811078U/en not_active Expired - Lifetime
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| CN105074141B (en) * | 2013-03-21 | 2017-03-15 | 林德股份公司 | The method and apparatus for producing electric energy |
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| CN108979762A (en) * | 2017-06-01 | 2018-12-11 | 中国科学院工程热物理研究所 | It is classified cold storage overcritical compressed-air energy-storage system and method |
| CN108979762B (en) * | 2017-06-01 | 2020-12-15 | 中国科学院工程热物理研究所 | Staged cold accumulation type supercritical compressed air energy storage system and method |
| CN111655989A (en) * | 2018-01-31 | 2020-09-11 | E2S电力公司 | Energy storage device and system |
| CN110761980A (en) * | 2019-11-27 | 2020-02-07 | 中国科学院工程热物理研究所 | Supercritical compressed air energy storage system with stepped utilization of work energy and cold energy |
| CN110761980B (en) * | 2019-11-27 | 2021-10-26 | 中国科学院工程热物理研究所 | Supercritical compressed air energy storage system with stepped utilization of work energy and cold energy |
| WO2022111273A1 (en) * | 2020-11-24 | 2022-06-02 | 丁玉龙 | Liquid air-based power generation system |
| CN112648076A (en) * | 2020-12-22 | 2021-04-13 | 东北大学 | Compressed air energy storage system |
| CN112648076B (en) * | 2020-12-22 | 2022-03-01 | 东北大学 | Compressed air energy storage system |
| CN113914951A (en) * | 2021-10-15 | 2022-01-11 | 西安热工研究院有限公司 | Nuclear power plant peak regulation system based on compressed air energy storage and operation method |
| CN113914951B (en) * | 2021-10-15 | 2024-01-19 | 西安热工研究院有限公司 | Nuclear power plant peak shaving system based on compressed air energy storage and operation method |
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